Year current US$ 1972 800000.011920929 1973 759999.990463257 1974 750000 1975 4230000.01907349 1976 469999.998807907 1977 360000.01430511504 1978 200000.00298023198 1979 189999.99761581398 1980 189999.99761581398 1981 129999.995231628 1982 59999.9986588955 1983 70000.0002980232 1984 39999.9991059303 1985 70000.0002980232 1986 200000.00298023198 1987 119999.997317791 1988 79999.9982118607 1989 100000.00149011599 1990 39999.9991059303 1991 50000.0007450581 1992 50000.0007450581 1993 9999.99977648258 1994 159999.99642372102 1995 209999.993443489 1996 259999.990463257 1997 500000 1998 319999.99284744303 1999 759999.990463257 2000 680000.007152557 2001 529999.971389771 2002 600000.023841858 2003 740000.009536743 2004 1000000 2005 920000.016689301 2006 670000.016689301 2007 1690000.0572204601 2008 1080000.04291534 2009 1309999.9427795399 2010 109999.999403954 2011 1159999.9666214 2012 540000.021457672 2013 419999.986886978 2014 699999.988079071 2015 360000.01430511504 2016 209999.993443489 2017 159999.99642372102 2018 119999.997317791 2019 50000.0007450581 2020 100000.00149011599 2021 70000.0002980232 2022 740000.009536743